Light attachment for sewing machines



A. T. BERTOLINL. LIGHT ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED JAN. 28, 1921.

Patented May 9, 1922.

flNaELa 75990470 Harm/NI monuns ANGELO TORQUATO BERTOLINI, OF NEW YORK, N. Y.

LIGHT ATTACHMENT FOR SEWING- MACHINES.

Specification of letters Patent.

Patented lliliay 9, 1922.

Application filed January 28, 1921. Serial No. 4411751.

'10 all whom itmay concern:

Be it known that I, .Anonno Tlcnzoon'ro Bnn'romivi, a citizen of the United States, and a resident oi the city of New Yorln borough of the Bronx. in the county of Bronx and State of New York, have invented a new and Improved Light Attachment :for Sewing Machines, of which the following is a full, clear, and exact descrip tion.

The invention relates to lamp attachments for sewing machines whereby the rays of light can be thrown in any desired direction for properly illuminating the work.

The object of the invention is to provide a new and improved light attachment for sewing machines arranged to permit the user to conveniently and quickly place the light in position on the sewing machine arm without requiring changes in the construction thereof.

Another object is to utilize the knee lifter stud secured to the arm of the sewing machine for supporting the light attachment.

Another object is to provide a light attachment which is very simple and durable in construction and not liable to get easily out of order.

With these and other objects in view, the invention consists of certain novel :t'eatures of construction as hereinafter shown and described and then specifically pointed out in the claim.

' A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in

which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improved. light attachment in position on a sewing machine;

Figure 2 is an enlarged cross section of the same on the line 22 of Figure 1;

Figure 3 is a plan view of a portion of the light attachment;

Figure 4 is a cross section of a modified form of the light attachment; and

Figure 5 is a longitudinal central section of the same on the line 5-5 of Figure 4.

The

improved light attachment is mounted on a stud 10 screwing into the sewing machine arm 11" and forming the fulcrum for the usual knee lifter 12 of the sewing machine. To the head '13 of the stud 10 is securedby a set screw 14- a U- shaped joint member 15 connected by two oppositely disposed pivots 16 with another U-shaped joint member 17 secured by a screw 18 to a clamping member 19. The clamping member 19 is provided with jaws 20 and 21 engaged by a clamping screw 22, and between the jaws 20 and 21 is held a tubular arm 23 supporting a lamp 2 1, preferably of incandescent type of usual construction, and having an adjustable lamp shade 25. It will be noticed that on loosening the clamping screw 22 the tubular arm 23 can be turned readily in the clamp 19 and a forward and backward swinging movement can be given to the tubular arm 23 owing to the pivotal joint connection connecting the clamp 19 with the head 13 of the stud 10. It will also be noticed that on loosening the screw 18 the clamp 19 can be turned 011 the joint member 17 and a light turning movement can be given to the joint member 15 on the screw 14 on loosening the latter. Thus by the arrange ment described a universal joint connection is provided to permit of adjusting the incandescent lamp 2 1- to any desired position with a view to throw the rays of light properly onto the work to illuminate the same. After the desired adjustment is made the screws 14; and 18 are screwed up and locked in place by set screws 30 and 31. The pivots 16 are preferably in the form of bolts provided with spring washers 32 to permit of tightening the joint members 15 and 17 one relative to the other to prevent accidental movement of the joint members after the incandescent lamp 241- has been adjusted to the desired position.

[By mounting the light attachment onto the stud 10 of the knee lifter 12 and making the tubular arm 23 of the desired length the incandescent lamp 24 is properly arranged adjacent the sewing machine head with out in any way interfering with the operation of the sewing machine or with the operator manipulating the work. It is further understood that the light attachment is mounted on the rear of the sewing machine and no alteration is required for installing the light attachment except to provide the head 13 of the stud 10 with the screws 14 and 30, as otherwise the stud is the same as the one now used for the kneelifter 12 to swing on. Throughthe tubular arm 23 a cord conductor 35 passes by which current is supplied to the incandescent lamp 24L.

In the modified form shown in Figure 4:, the tubular arm 23 passes through a clamping block 40 and through a clamping ring &1, and the said block 40 and ring 41 are supported by the horizontal member of an L-shaped bracket 1-2 fastened at its vertical member by a screw let to the head 13 of the stud 10. A screw i3 screws into the clamping block 40 and extends through the horizontal'member of the bracket 42 and through washers d4, 4:5 and 46, and a nut 47 screws on the screw 48 against the ANGELO TORQUATO BERTOLINL 

